Error while using demo in google chrome with injection script.

I am getting this warning and after joining nothing is returned in demo.openwebrtc.org

```
** (openwebrtc-daemon:32488): WARNING **: Exception in closure marshal. Line 77 in bridgeserver.js: TypeError undefined is not a function (evaluating 'Object.keys(originTokens).find(function (origin) {
return originTokens[origin] == ws.protocol;
})')

Stack:
onaccept@bridgeserver.js:77:48
websocket.js:381:35
websocket.js:451:25
```

Thanks